The list of sources below is incomplete. For a more complete list of relevant sources of info about Daniel Tammet and his feats see my new book:
Daniel Tammet: the Boy with the Incredible Story
by Lili Marlene
How you can help: NSE events: Pi in the sky. (2004) National Society for Epilepsy.
This link is now dead, but a record of it's content in June 2004 can be accessed through the Internet Archive Wayback Machine http://www.archive.org/
[I believe this piece could have been written before the actual event and left unedited, because it does not actually state the number 22,514 which is supposed to be Tammet's actual record: "A Kent man has succeeded in his attempt to set a new British and European record by using his incredible memory to recall the mathematical constant Pi (3.141...) to over 22,500 decimal places." Another quote from the webpage: “Daniel was part of a research study on prodigious mental ability at London's Institute of Neurology. The data appeared in the new year 2003 edition of the prestigious neuro-scientific magazine 'Nature'.” This certainly would have been the “Routes to Remembering” study by Maguire, Valentine, Wilding and Kapur.]
March, Stefanie (2004) Learn these 500 digits of pi by heart. That is about 2% of what this man can remember. Times, The March 13th 2004 Section: Home news, p.5. Accession number 7EH3642629466.
[I accessed this thru the Australian/New Zealand Reference Centre at EBSCOhost. A breathless article promoting Tammet’s Pi recitation to be held the next day. A quite lengthy and detailed article considering it is about an event not yet performed. A target figure of 22,500 for the number of decimal places expected for Tammet’s Pi recitation is given. There certainly must have been a lot of psychological pressure on Tammet to perform as planned. The venue is given as the Museum of the History of Science at Oxford University. March explains that Tamet’s mnemonic ability is “abnormal” and due to him being “one of only a handful of “acquired savants”” as a result of epilepsy at age 3. Tammet claims to be not autistic, but the journalist claims he exhibits some “symptoms”. There is discussion of Tammet’s supposed peculiarities of thought and behaviour. “Epilepsy and schizophrenia both run in the family.” After this quote there is a description of visual experiences which could be interpreted as schizophrenia hallucinations or as synaesthesia, but which I don’t think are typical of either. Tammet does not appear to like being asked to account for how he does his memory feats: “Because I am not autistic, people expect me to be more accountable than I want to be” “I can no more explain what I can do and the limits of my ability than anyone else. I do not need to prove myself.” At the end of this article is given a link to the National Society for Epilepsy's page about Tammet's Pi recitation: http://www.epilepsynse.org.uk/pages/involved/fundevents/pi.cfm]
New Pi record. (2004) Times, The March 15th 2004. Section: Home news, p. 14.
[No writer is cited for this one paragraph article reporting that “Daniel Tammet smashed the European record for Pi recollection, reciting 22,514 decimals from memory...” It seems odd that the promotional article about this event was much more long and detailed, while the article reporting what actually happened appears to be merely an anonymous afterthought.]
A fair slice of Pi. (2004) Herald Sun (Melbourne). March 17th 2004
Edition: 1 – First. Section: News, p.7. Accession number: 200403171007282512.
[Writer not named. This report did not even give the exact number of the record: “A REAL life Rain Man said he was exhausted yesterday after counting his way into the record books by reciting the number pi to more than 22,500 decimal places.”]
Lyall, Sarah (2007) Brainman, at Rest in His Oasis. New York Times. February 15th 2007. http://www.nytimes.com/2007/02/15/garden/15savant.html
[regarding Tammet’s Pi recitation: “The recitation took place at the Museum of the History of Science in Oxford, lasted five hours and nine minutes and was monitored by students from the department of mathematical sciences at Oxford Brookes University. Mr. Tammet made no mistakes.” Oxford Brookes Uni is apparently a different uni than the University of Oxford, but located close by. The Museum of the History of Science in Oxford is a department of the University of Oxford, so there were apparently two different unis involved in Tammet’s Pi recitation event.]
Pi Memory Feat. (2008) University of Oxford.
Daniel Tammet (accessed 2011) Pi World Ranking List.
["This was long time claimed as a European Record, as Daniel recited 22,514 decimal places. Unfortunately he made his first mistake at postion 2,965 and did not correct this error immediately and without outside help, but only after he was told that there was a mistake."]
Pi Record (2011) Optimnem: Daniel Tammet: the official website.